Half to cornelius e



Patntd June 13, 1893.

J. L. BoVWLEs. PUGy MILL.

(No Model.)

me noms Urns pq., worum-Ho.. wAsmNuroN, n. c.

UNITED STATES PATENT OFFICE.

.IOHN L. BOWLES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO CORNELIUS E. BAIRD, OF SAME PLACE.

PUG-MILL.

SPECIFICATION forming part of Letters Patent No. 499,413, dated June 13, 1893. Application 111111111111111. 1892. s611111 111.428.562. (1101111111111.)

To all whom it may concern.-

Be it known that I, JOHN L. BOWLES, a citizen of the United States, and a resident of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Pug-Mills, of which the following is a speciicatiou. Y

My invention relates to pug mills, or machinery for mixing plastic compositions, such as lime, plaster or cement, and consists of certain improvements which are fully set forth in the following specification and are shown in the accompanying drawings which form a a part thereof.

My invention is particularly adapted for mixing slaked lime and water together for the purpose of making plaster or mortar, but is also adapted for other uses.

It is the object of my invention to provide a machine for mixing materials together, which shall be simple in operation and construction, and shall operatein such a manner as to thoroughly combine or mix together the elements under treatment.

In carrying out my invention, I employ certain novel combinations and arrangement of parts and improvements of construction which are hereinafter more fully described and claimed. l

In the drawingsz-Figure 1 is a sectional side elevation of my improved mixing machine. Fig. 2 is a horizontal sectional view of the same on the|1ine w-m ot' Fig. 1. Fig. 3 is a sectional side elevation'of a part of a mixing machine illustrating a modification of the invention; and Fig. 41 is a vertical sectional view on the line y-y of Fig. 2.

A isa suitable receptacle which may be of any convenient construction and shape, having the solid bottom B which may be provided with an outlet M having a gate m by means.

of which the mixture may be allowed to run out of the cylinder.

C is a vertical shaft extending through the bottom B into the vessel A and journaled in a`bearing b of a bracket h at the upper part of the vessel. The lower end of the shaft is seated in a bearing c in an adjustable stud D. The shaft C may be rotated through the bevel gear Q carried by it and driven by a bevel gear R 'carried by the counter shaft S, which is driven from the pulley I. While I have shown .the power devices for rotating the shaft C at the bottom, it is understood that they may if desired be located at the top, the shaft being suitably extended. In place of this bevel gear any other suitable power transmitting devices may be employed.

`e is a series of radial arms or blades carried. by the shaft C and adapted to break up the lime or other material introduced into the vessel.- In connection with these radial arms or blades c which are carried by the shaft C and rotate with it, a series of stationary projecting arms g carried by the `inner surface of the vessel and arranged adjacent to the radial arms e may be employed. These stationary armsgassist the radial arms or blades e in mixing up the material under treatment.

F is a spider xedly carried by the shaftC and located thereon adjacent to the bottom B. The spider `F is provided with a series of lradial arms f, upon each of which is looselyjournaled a rotary sleeve G. l These sleeves G are provided Vwith projecting wings, arms or pins K and also with gear Wheels H.

I is a stationary'circular gear carried by the vessel A with which the gear wheels H of the sleeves G mesh. This gear I may be carri-ed by the bottom B below the gear wheels H as shown in Figs. l and 2, or it may be carried by the inner vertical surface of thefvesscl A and located above the gear wheels H, as shown in dotted lines in Fig. l.

' The projecting wings, arms or projections K carried by the sleeves yG may be of any desired construction. In Figs. 1, 2 and It they are shown in the form of radial wingsof approximately the length of the sleeves with open or perforated portions k at the middle portions adjacent? to the sleeves, while in Fig. 3 they are shown in the form of pins carried -by the sleeves. When the pins are employed, they may be arranged spirally.

In Figs. l and 2, I have shown the gear Wheels H at the outer ends of thel sleeves G, while in Fig. 3 they are shown at the inner ends adjacent to the shaft C, with the annular stationary gear I located in a corresponding position. Any number (one or more) of the radial arms f and rotary sleeves G may be employed.

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In the construction shown in Fig. 3, L is a hood placed about the shaft C and covering the gears H and I.

N is a Water pipe provided with a valve 'n for admitting Water as desired to the interior part of the vessel.

O is a circular perforated Water pipe located about the upperl part of the vessel to throw a line spray of water upon the material in the vessel.

P is a valve for controlling the supply of water to the spraying pipe O.

I shall now describe the operation of the apparatus. A quantity of lime is introduced into the cylinder and water is admitted through either or both of the pipes N and O. After the lime is properly slaked, the shaft C is rotated to thoroughly combine the mixture. This is partly accomplished by the rotary arms or blades e and the stationary arms g, and partly by the rotation of the sleeves G with the project-ing wings, arms or pins K.

It will be seen that wherethe shaft C rotates carryingr the arms f with it1 the gear wheels H which are carried on the arms are rotated by the stationary gear I turning the sleeves G and their projecting wings, arms or pins K upon the arms f. The wings or pins K thus act to thoroughly stir up the mixture. Water and additional quantities of lime may be introduced as required and the agitation or stirring action continued until the mixture reaches the proper consistency, when it may be drawn olf through the outlet M, in such quantities as may be desired, and mixed with the sand or other elements for themanufacture of mortar or plaster.

While I have described the operation of my apparatus more particularly with reference to the slaking of lime and mixing it with Water for the purpose of making mortar, it is apparent that my apparatus may be equally applied with other materials which it is desired to thoroughly mix together.

I prefer the minor details of construction that have been shown but do not limit myself to them as it is apparent that they may be modified without changing' the invention.

What I claim as new, and desire to secure bv Letters Patent, is

1. The combination with the vessel having a solid bottom provided with a stationary annular gear, of a central shaft, a spider carried by the shaft and having one or more radial arms, and rotary sleeves carried by the radial arms and provided with radial projections and with gear wheels meshing With the stationary gear.

2. In a mixing machine, the combination of a closed vessel, a vertical shaft journaled therein and provided with laterally projecting arms, rotary sleeves journaled on said arms and free to rotate thereon provided with a series of projections, a stationary annular gear located within the vessel, gear wheels carried by the sleeves and engaging with the stationary gear, and power devices to rotate the vertical shaft, whereby the positive rotation of the shaft turns the projecting arms carried by it in a horizontal plane and moves the gear wheels of the sleeves upon the stationary gear of the vessel causing the sleeves to rotate upon the arms as axes and thoroughly mix the contents of the vessel by the series of projections carried by them.

3. In a mixing machine, the combination of a closed vessel, a main rotary shaft journaled therein and provided with radially projecting arms, rotary sleeves upon said radial arms adapted to rotate thereon, and a series of radially projecting wings K arranged longitudinally upon the sleeves and forming a series of longitudinal mixing wings carried by each arm and moving therewith about the axis of the main rotary shaft and also about the rotary arms.

4. In a mixing machine, the combination with a suitable vessel to contain the ingredients to be mixed, of a rotary shaft journaled therein and carrying one or more radial arms e, the stationary projecting arms or blades projecting from the interior of the vessel, and the rotary wings o r blades K carried by the shaft C and rotating transversely to the axis of rotation of the shaft.

5. In a mixing machine the combination with a suitable vessel to contain the ingredients to be mixed, of a rotary shaft journaled therein and provided with a series of radial arms, sleeves j ournaled upon said radial arms and free to rotate thereon transversely to the axis of rotation of the shaft, and provided with longitudinally arranged radially projecting Wings K of a length approximately equal to the length of the sleeves.

6. In a mixing machine, the combination with a suitable vessel to contain the ingredients to be mixed, of a rotary shaft journaled thereon and provided with a series of radial arms, sleevesjournaled upon said radial arms and free to rotate thereon transversely to the axis of rotation of the shaft, and provided with longitudinally arranged radially projecting wings K of a length approximately equal to the length of the sleeves provided with openings or perforationsk.

7. The combination with the vessel A of the shaft C, having the radial arms f, rotary sleeves G journaled on said arms f, and provided With radial projections, gear wheels I-I carried by the sleeves G, stationary gear I located within the vessel A meshing with gear wheels Il, and the hood L extending over the gear wheels H and stationary gear I.

In testimony of which invention I have hereunto set my hand.

JOHN L. BOVLES.

Witnesses:

C. E. BAIRD, ERNEST HOWARD HUNTER.

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